Category:FireBrick USB Dongles: Difference between revisions

Multiple USB Dongles can used via a USB hub - however the benefits of bonding multiple 3G are small, as you'll typically be contending with yourself and so there will be little or no added bandwidth.

Using multiple dongles with SIMs from different providers may provide extra resilience in the case of one having a problem.

 

=Basic Config=

The example below is all you need to get the dongle configured. If your main broadband connection goes down, the FireBrick will automatically switch to use the 3G connection, then back again once your main connection is back.

 

<usb>

<dongle username="me@a.2" password="secret"/>

</usb>

</syntaxhighlight>

 

=Tunneled IPv6 Fallback=

==Example Config==

LAN Interface for IPv6 tunnel over 3G dongle (with MTU 1500):

<interface name="LAN" port="LAN" ra-client="false">

<subnet ip="2001:8b0::1/64 10.0.0.1/24" ra="true" ra-mtu="1480" ra-dns="2001:8b0::2020 2001:8b0::2021"/>

</syntaxhighlight>

LAN Interface for IPv6 tunnel over 3G dongle (with MTU 1492):

<interface name="LAN" port="LAN" ra-client="false">

<subnet ip="2001:8b0::1/64 10.0.0.1/24" ra="true" ra-mtu="1472" ra-dns="2001:8b0::2020 2001:8b0::2021"/>

</syntaxhighlight>

Connect to AAISP over PPPoE session (3G dongle tweaks and NAT):

<ppp name="AAISP" port="WAN" username="me@a.1" password="secret" nat="true" lcp-rate="1" lcp-timeout="5" graph="AAISP" log="default"/>

</syntaxhighlight>

Connect to AAISP over 3G dongle (with NAT):

<dongle name="AAISP-3G" username="me@a.2" password="secret" nat="true" graph="AAISP-3G" log="default"/>

</syntaxhighlight>

3G dongle IPv6 default route using IPv4 tunnel:

<route ip="::/0" gateway="81.187.81.6" comment="IPv6 default route using IPv4 tunnel"/>

</syntaxhighlight>

 

=Turning the dongle off outside of office hours=

Cold starts take a lot longer!

 

<usb>

<dongle name="AAISP-3G" username="me@a.3" password="secret" graph="AAISP-3G" profile="AAISP-3G"/>